5 Best Liquid Weed Killers for Lawns 2025 – Tested & Reviewed

Our tests mirrored the customer consensus: it's generally easy to apply, with visible greening after a week in most cases. Some patches of dandelion and clover were noticeably reduced, and the nitrogen boosted overall turf color.

Customer insights indicate occasional inconsistencies in weed performance—sometimes requiring a follow-up application for tougher broadleaf weeds. While the majority loved the improved lawn color, a few experienced yellowing, possibly linked to application error or existing lawn stress. Sprayer malfunctions were noted, so double-check connections before wide use.

In hands-on comparison, Ortho performed best for small to mid-level weed outbreaks. Results were inconsistent on dense infestations, but dandelions started curling within days. Lawns stayed green as long as label directions were followed.

Customers liked the quick setup, though some experienced spray pattern issues and varying results on stubborn weeds. Some noticed crabgrass reduction after one week, but not total elimination. Value for money praised by most, but expect to reapply for tougher spots.

Customers overwhelmingly loved the green-up effect—lawns responded with vibrant growth within days. Setup is straightforward, and the universal hose attachment is a step up, but a few reported defective sprayer heads.

Some users were disappointed expecting a weed killer effect: this is primarily a fertilizing product. If paired with a separate pre-emergent or post-emergent weed control, Sunday helps lawns outcompete weeds via thick growth.

During use, the tip-and-pour bottle made accurate dosing simple, but the lack of sprayer inclusion requires you to own a garden sprayer. Mixed customer feedback: some saw good results on smaller clover plots while others reported poor results against certain weeds.

A few users experienced leaky packaging. Directions cater to larger treatments, so smaller plots may need extra care on dilution calculations. The product is considered pet-safe once dry.

Setup was a breeze—customers and testers both liked the wand for aiming. Most saw smaller weeds wilt quickly, but large or mature specimens sometimes required a second application. Opinions varied on scent; results were best noted within beds, cracks, or targeted patches.

Not everyone was convinced by price-to-area justification for large lawns, but those with pets and children prioritized safety. Works best early in the season or with repeated use for stubborn regrowth.